CN204086236U - Fireproof cable combustion test box - Google Patents
Fireproof cable combustion test box Download PDFInfo
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- CN204086236U CN204086236U CN201420576558.XU CN201420576558U CN204086236U CN 204086236 U CN204086236 U CN 204086236U CN 201420576558 U CN201420576558 U CN 201420576558U CN 204086236 U CN204086236 U CN 204086236U
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Abstract
The utility model discloses fireproof cable combustion test box, comprise combustion box, support, fixture, metal support ring, burner and blowtorch; Described combustion box is provided with two, is provided with support, burner and blowtorch in each combustion box; Described support is fixed with two fixtures, two fixtures lay respectively at the two ends of support, are provided with at least two metal support rings be fixed on support between two fixtures; The nozzle of described blowtorch is positioned at the side of support; Described fixture and metal support ring are for fixing, supporting tested cable; Described burner is positioned at below tested cable, and in banded.The utility model, by simulated fire occasion, when cable passes into load, measures the actual temperature of fireproof cable inner conductor, thus whether line loss is up to standard in case of fire to detect tested cable, test unit structure is simple, and security performance is high, easy to operate.
Description
Technical field
The utility model relates to a kind of fireproof cable combustion test box.
Background technology
It has often been said that floods and fires have no mercy, since the mankind find fire, fire not only accelerates the development of human civilization, and also bring destruction to human civilization, the civilization in how many ancient times is destroyed in big fire.Equally, fire also can burn comprehensive wiring system, and Internet Transmission is interrupted.Meanwhile, if cable produces a large amount of toxic gases and flue dust in combustion, so can produce impact greatly to the escape of personnel, even become safe hidden danger.Therefore, the engineers of various countries is all stepping up to study for data backup and the safer fireproof cable of personnel.The fireproof cable of high-quality requires the cable performance that holding circuit is intact in case of fire.Therefore the important means that fire smoldering test becomes test fireproof cable performance is carried out to fireproof cable.
Utility model content
The purpose of this utility model is to provide a kind of fireproof cable combustion test box, for simulated fire occasion in burning test.
The technical scheme realizing the utility model object is: fireproof cable combustion test box, comprises combustion box, support, fixture, metal support ring, burner and blowtorch; Described combustion box is provided with two, is provided with support, burner and blowtorch in each combustion box; Described support is fixed with two fixtures, two fixtures lay respectively at the two ends of support, are provided with at least two metal support rings be fixed on support between two fixtures; The nozzle of described blowtorch is positioned at the side of support; Described fixture and metal support ring are for fixing, supporting tested cable; Described burner is positioned at below tested cable, and in banded.
The top of described combustion box is provided with fume extractor.
Described combustion box to be the length be made up of stainless steel material be 2100mm, wide for 1100mm, height be the rectangular parallelepiped chest of 800mm.
Distance between described two combustion box is not more than 300mm.
Described metal support is equipped with two, and the spacing of two metal support rings is 300mm; Or described metal support is equipped with five, the distance between adjacent two metal support rings is 150mm.
Described blowtorch comprises nozzle, air intake duct, gas inlet pipe and venturi mixer; Described nozzle, air intake duct are all communicated with venturi mixer with gas inlet pipe.
70 ± 10mm below the minimum point that the central horizontal face of the nozzle of described blowtorch is arranged on tested cable; The distance in the nozzle of described blowtorch and the central vertical face of tested cable is 45mm.
Have employed technique scheme, the utility model has following beneficial effect: (1) the utility model is by simulated fire occasion, when cable passes into load, measure the actual temperature of fireproof cable inner conductor, thus whether line loss is up to standard in case of fire to detect tested cable, test unit structure is simple, and security performance is high, easy to operate.
(2) top of the combustion box of test unit of the present utility model is provided with fume extractor, can get rid of the flue gas that burning produces, and improves the security of test.
Accompanying drawing explanation
In order to make content of the present utility model more easily be clearly understood, below according to specific embodiment also by reference to the accompanying drawings, the utility model is described in further detail, wherein
Fig. 1 is the inner structure schematic diagram of fireproof cable combustion test box of the present utility model.
Fig. 2 is the schematic diagram of the position between the blowtorch of fireproof cable combustion test box of the present utility model and tested cable.
Fig. 3 is the upward view of Fig. 2.
Fig. 4 is the device connection diagram that fireproof cable band of the present utility model carries the first method of burning test.
Fig. 5 is the device connection diagram that fireproof cable band of the present utility model carries the second method of burning test.
Fig. 6 is the device connection diagram that fireproof cable band of the present utility model carries the third method of burning test.
Label in accompanying drawing is:
Combustion box 1, support 2, fixture 3, metal support ring 4, blowtorch 5, nozzle 51, air intake duct 52, gas inlet pipe 53, venturi mixer 54, current transformer 6, punching transformer 7, electrical power control cabinet 8, electric furnace 9, tested cable 10, bulb load 11.
Embodiment
(embodiment 1)
See Fig. 1 to Fig. 3, the fireproof cable combustion test box of the present embodiment, comprise combustion box 1, support 2, fixture 3, metal support ring 4, burner and blowtorch 5.
Combustion box 1 to be the length be made up of stainless steel material be 2100mm, wide for 1100mm, height be the rectangular parallelepiped chest of 800mm.The top of combustion box 1 is provided with fume extractor.Combustion box 1 is provided with two, and the distance between two combustion box 1 is not more than 300mm.In each combustion box 1, support 2, burner and blowtorch 5 is installed.Support 2 is fixed with the two ends that two fixtures, 3, two fixtures 3 lay respectively at support 2, between two fixtures 3, is provided with at least two metal support rings 4 be fixed on support 2.The nozzle 51 of blowtorch 5 is positioned at the side of support 2.Fixture 3 and metal support ring 4 are for fixing, supporting tested cable 10.Burner is positioned at below tested cable 10, and in banded.
Metal support ring 4 is provided with two under normal circumstances, and the spacing of two metal support rings 4 is 300mm.When tested cable 10 is less than the armorless cable of 10mm for diameter or has other cable of obvious movement at duration of test, metal support ring 4 is provided with five, and the distance between adjacent two metal support rings 4 is 150mm.
Blowtorch 5 comprises nozzle 51, air intake duct 52, gas inlet pipe 53 and venturi mixer 54.Nozzle 51, air intake duct 52 are all communicated with venturi mixer 54 with gas inlet pipe 53.70 ± 10mm below the minimum point that the central horizontal face of nozzle 51 is arranged on tested cable 10.The nozzle 51 of blowtorch 5 is 45mm with the distance in the central vertical face of tested cable 10.
See Fig. 4, the first method that fireproof cable band carries burning test adopts cable rated current, and cable conductor temperature change in test high-temp combustion situation, specifically comprises the following steps:
1., by tested cable 10 through two combustion box 1, and fixed by fixture 3, regulate the position of two metal support rings 4 simultaneously, ensure that the combustion parts of tested cable 10 is in horizontality.When tested cable 10 is less than the armorless cable of 10mm for diameter or has other cable of obvious movement at duration of test, add three metal support rings 4 and support tested cable 10, to guarantee that tested cable fire part is horizontal, parallel with ribbon burners.
2., the more all master core conductors in tested cable 10 one end are fixed on an electrode of the current-carrying capacity regulating system be made up of current transformer 6 and transformer 7; the all master core conductors of tested cable 10 other end are fixed on another battery lead plate of current-carrying capacity regulating system; be connected to form closed-loop path, this master core conductor does not include any conductor clearly marking, intend being used as neutral conductor or protection conductor.
3., by the neutral conductor of tested cable 10 and protection conductor and fixture 3 and metal support ring 4 ground connection.
The master core of the tested cable 10 4., between two combustion box 1 opens small gap, exposes master core conductor, the part exposing conductor can remove sheath and the insulation course of outside, on master core conductor, then implant the thermopair for testing master core temperature.If the master core of tested cable 10 has more than three or three, then need all to open small gap on different master cores, implant thermopair in the conductor respectively.
5., relatively tested cable 10 adjusts the position of blowtorch 5, and 70 ± 10mm position below the minimum point making the central horizontal face of nozzle 51 be positioned at tested cable 10, makes nozzle 51 be 45mm with the distance in the central vertical face of tested cable 10 simultaneously.
6. the diameter that square installation is used for test flame temperature, is on the burner no more than the thermopair of 2mm, the placement parallel with burner of this thermopair, and is positioned at 75mm place above burner.
7., switch on power, open air valve, light blowtorch 5, and the supply of adjustments of gas and air, make test temperature reach 950 scholar 40 DEG C, then remove the thermopair of test flame temperature, then the position of blowtorch 5 is adjusted, make it parallel with burner, and make the lower surface of cable 75mm place above burner, then protracted test three hours.
8., start current-carrying capacity regulating system, electric current is added to gradually the rated current of cable, presses timer and start timing.
9., during protracted test, the temperature of conductor in each core of thermopair record of test master core temperature was passed through at interval of 10 minutes.
10., in protracted test process, the surface of periodic cleaning burner, excises supply voltage during cleaning, correspondingly extends test period simultaneously.
See Fig. 5, the second method that fireproof cable band carries burning test adopts low current, by regulating rated voltage, and cable conductor temperature change in test high-temp combustion situation, more whether test cable punctures, and specifically comprises the following steps:
1., by tested cable 10 through two chambers 1, and fixed by fixture 3, regulate the position of two metal support rings 4 simultaneously, ensure that tested cable fire part is in horizontality.When tested cable 10 is less than the armorless cable of 10mm for diameter or has other cable of obvious movement at duration of test, add three metal support rings 4 and support tested cable 10, to guarantee that tested cable fire part is horizontal, parallel with ribbon burners.
Three, master core conductor one end master core of being led by tested cable 10 2., again accesses on the three-phase supply of transformer isolation power supply in electrical power control cabinet 8 respectively, and another termination bulb load 11 of master core conductor, is connected to form closed-loop path.When tested cable 10 is single core, twin-core or triple cable, every root master core conductor is connected respectively on the three-phase supply of electrical power control cabinet 8.When tested cable 10 has the master core conductor of more than three, master core can be divided into three groups, and as far as possible by adjacent conductor respectively in different groups, then be parallel-connected to by the conductor in each group on the three-phase supply of electrical power control cabinet 8, center conductor and zero line connect the zero line of transformer isolation power supply.
3., by the neutral conductor of tested cable 10 and protection conductor and fixture 3 and metal support ring 4 ground connection.
The master core of the tested cable 10 4., between two chambers 1 opens small gap, exposes master core conductor, the part exposing conductor can remove sheath and the insulation course of outside.
5., relatively tested cable 10 adjusts the position of blowtorch 5, and 70 ± 10mm position below the minimum point making the central horizontal face of nozzle 51 be positioned at tested cable 10, makes nozzle 51 be 45mm with the distance in the central vertical face of tested cable 10 simultaneously.
6. the diameter that square installation is used for test flame temperature, is on the burner no more than the thermopair of 2mm, the placement parallel with burner of this thermopair, and is positioned at 75mm place above burner.
7., switch on power, open air valve, light blowtorch 5, and the supply of adjustments of gas and air, make test temperature reach 950 scholar 40 DEG C, then remove the thermopair of test flame temperature, then the position of blowtorch 5 is adjusted, make it parallel with burner, and make the lower surface of cable 75mm place above burner, then protracted test three hours.
8., start the voltage-regulating system of electrical power control cabinet 8, regulate transformer output voltage, voltage is added to gradually the rated voltage of cable by transformer, voltage is maximum is adjusted to 1000V, guarantees that bulb is entirely bright simultaneously, presses timer and start timing.
9., during protracted test, to test with infrared thermometer at interval of 10 minutes and record the temperature of conductor in each master core, observing the light on and off situation of bulb simultaneously.
10., in protracted test process, the surface of periodic cleaning burner, excises supply voltage during cleaning, correspondingly extends test period simultaneously.
See Fig. 6, the third method that fireproof cable band carries burning test adopts rated voltage and load, and cable conductor temperature change in test high-temp combustion situation, specifically comprises the following steps:
1., by tested cable 10 through two chambers 1, and fixed by fixture 3, regulate the position of two metal support rings 4 simultaneously, ensure that tested cable fire part is in horizontality.When tested cable 10 is less than the armorless cable of 10mm for diameter or has other cable of obvious movement at duration of test, add three metal support rings 4 and support tested cable 10, to guarantee that tested cable fire part is horizontal, parallel with ribbon burners.
Three, master core conductor one end master core of being led by tested cable 10 2., again accesses the three-phase supply phase line of electrical power control cabinet 8 respectively, and another termination power is not less than the electric furnace load 9 of 1000kW, is connected to form closed-loop path.When tested cable 10 is single core, twin-core or triple cable, every root master core conductor is connected respectively on the three-phase supply of electrical power control cabinet 8.When tested cable 10 has the master core conductor of more than three, master core can be divided into three groups, and as far as possible by adjacent conductor respectively in different groups, be then parallel-connected to by the conductor in each group on the three-phase supply of electrical power control cabinet 8, center conductor and zero line connect zero-power line.
3., by the neutral conductor of tested cable 10 and protection conductor and fixture 3 and metal support ring 4 ground connection.
The master core of the tested cable 10 4., between two chambers 1 opens small gap, exposes master core conductor, the part exposing conductor can remove sheath and the insulation course of outside, on master core conductor, then implant the thermopair for testing master core temperature.If the master core of tested cable 10 has more than three or three, then need all to open small gap on different master cores, implant thermopair in the conductor respectively.
5., relatively tested cable 10 adjusts the position of blowtorch 5, and 70 ± 10mm position below the minimum point making the central horizontal face of nozzle 51 be positioned at tested cable 10, makes nozzle 51 be 45mm with the distance in the central vertical face of tested cable 10 simultaneously.
6. the diameter that square installation is used for test flame temperature, is on the burner no more than the thermopair of 2mm, the placement parallel with burner of this thermopair, and is positioned at 75mm place above burner.
7., switch on power, open air valve, light blowtorch 5, and the supply of adjustments of gas and air, make test temperature reach 950 scholar 40 DEG C, then remove the thermopair of test flame temperature, then the position of blowtorch 5 is adjusted, make it parallel with burner, and make the lower surface of cable 75mm place above burner, press timer and start timing then protracted test three hours.
8., during protracted test, to test with infrared thermometer at interval of 10 minutes and record the temperature of conductor in each master core.
9., in protracted test process, the surface of periodic cleaning burner, excises supply voltage during cleaning, correspondingly extends test period simultaneously.
Three kinds of fireproof cable bands carry in burning test, and the length of tested cable 10 is not less than 15m, and sheath and the outer cover of its every one end divest 100 ~ 300mm.Tested cable 10 after the test completing first method, then can carry out the load combustion test of second method on same cable.Tested cable 10 after the test of Method Of Accomplishment one, then can also carry out the test of method three load combustion on same cable.
Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any amendment made, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (7)
1. fireproof cable combustion test box, is characterized in that: comprise combustion box (1), support (2), fixture (3), metal support ring (4), burner and blowtorch (5); Described combustion box (1) is provided with two, is provided with support (2), burner and blowtorch (5) in each combustion box (1); Described support (2) is fixed with two fixtures (3), two fixtures (3) lay respectively at the two ends of support (2), are provided with at least two metal support rings (4) be fixed on support (2) between two fixtures (3); The nozzle (51) of described blowtorch (5) is positioned at the side of support (2); Described fixture (3) and metal support ring (4) are for fixing, supporting tested cable (10); Described burner is positioned at tested cable (10) below, and in banded.
2. fireproof cable combustion test box according to claim 1, is characterized in that: the top of described combustion box (1) is provided with fume extractor.
3. fireproof cable combustion test box according to claim 1, is characterized in that: described combustion box (1) to be the length be made up of stainless steel material be 2100mm, wide for 1100mm, height be the rectangular parallelepiped chest of 800mm.
4. fireproof cable combustion test box according to claim 1, is characterized in that: the distance between described two combustion box (1) is not more than 300mm.
5. fireproof cable combustion test box according to claim 1, is characterized in that: described metal support ring (4) is provided with two, and the spacing of two metal support rings (4) is 300mm; Or described metal support ring (4) is provided with five, the distance between adjacent two metal support rings (4) is 150mm.
6. fireproof cable combustion test box according to claim 1, is characterized in that: described blowtorch (5) comprises nozzle (51), air intake duct (52), gas inlet pipe (53) and venturi mixer (54); Described nozzle (51), air intake duct (52) are all communicated with venturi mixer (54) with gas inlet pipe (53).
7. fireproof cable combustion test box according to claim 1, is characterized in that: 70 ± 10mm below the minimum point that the central horizontal face of the nozzle (51) of described blowtorch (5) is arranged on tested cable (10); The nozzle (51) of described blowtorch (5) is 45mm with the distance in the central vertical face of tested cable (10).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420576558.XU CN204086236U (en) | 2014-10-04 | 2014-10-04 | Fireproof cable combustion test box |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420576558.XU CN204086236U (en) | 2014-10-04 | 2014-10-04 | Fireproof cable combustion test box |
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| CN204086236U true CN204086236U (en) | 2015-01-07 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104215735A (en) * | 2014-10-04 | 2014-12-17 | 远东电缆有限公司 | Combustion testing box and loaded combustion testing method for fireproof cable |
| CN109100292A (en) * | 2018-08-13 | 2018-12-28 | 东莞市大显自动化仪器设备有限公司 | A kind of cable impact endurance test shock rainfall testing machine fire resisting rain test device |
| CN109580868A (en) * | 2018-12-24 | 2019-04-05 | 深圳市恒义建筑技术有限公司 | A kind of cable testing vertical flammability instrument and its testing vertical flammability method |
| CN109632793A (en) * | 2018-12-13 | 2019-04-16 | 国网陕西省电力公司 | Experiment porch and method for the research of cable tunnel fire temperature field simulated behavior |
| CN111624298A (en) * | 2020-05-19 | 2020-09-04 | 广东南缆电缆有限公司 | Safety performance test method for overload non-combustible electric wire |
-
2014
- 2014-10-04 CN CN201420576558.XU patent/CN204086236U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104215735A (en) * | 2014-10-04 | 2014-12-17 | 远东电缆有限公司 | Combustion testing box and loaded combustion testing method for fireproof cable |
| CN104215735B (en) * | 2014-10-04 | 2015-11-11 | 远东电缆有限公司 | Fireproof cable combustion test box and band thereof carry the method for burning test |
| CN109100292A (en) * | 2018-08-13 | 2018-12-28 | 东莞市大显自动化仪器设备有限公司 | A kind of cable impact endurance test shock rainfall testing machine fire resisting rain test device |
| CN109632793A (en) * | 2018-12-13 | 2019-04-16 | 国网陕西省电力公司 | Experiment porch and method for the research of cable tunnel fire temperature field simulated behavior |
| CN109580868A (en) * | 2018-12-24 | 2019-04-05 | 深圳市恒义建筑技术有限公司 | A kind of cable testing vertical flammability instrument and its testing vertical flammability method |
| CN111624298A (en) * | 2020-05-19 | 2020-09-04 | 广东南缆电缆有限公司 | Safety performance test method for overload non-combustible electric wire |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210426 Address after: No. 8, Gaocheng Town, Yixing city of Jiangsu Province, Wuxi City, the Far East Avenue 214257 Patentee after: FAR EAST CABLE Co.,Ltd. Patentee after: NEW FAR EAST CABLE Co.,Ltd. Patentee after: FAR EAST COMPOSITE TECHNOLOGY Co.,Ltd. Patentee after: ELECTRIC POWER SCIENCE RESEARCH INSTITUTE OF STATE GRID ANHUI ELECTRIC POWER Co.,Ltd. Address before: No. 8, Gaocheng Town, Yixing city of Jiangsu Province, Wuxi City, the Far East Avenue 214257 Patentee before: FAR EAST CABLE Co.,Ltd. Patentee before: NEW FAR EAST CABLE Co.,Ltd. Patentee before: FAR EAST COMPOSITE TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right |